1620880

素因数分解:

$2^4\times 5^1\times {\mathrm{20261}}^1$

素因数の和:20274

約数の個数: 20

約数和(自身を含む): 3768732

約数和(自身を除く): 2147852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20261, 40522, 81044, 101305, 162088, 202610, 324176, 405220, 810440, 1620880]

約数ペア:

[(1, 1620880), (2, 810440), (4, 405220), (5, 324176), (8, 202610), (10, 162088), (16, 101305), (20, 81044), (40, 40522), (80, 20261)]